<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title>让坦克开起来</title>
		<style type="text/css">
			input{font-size:26px;margin-top: 20px;}
			body{background-image: url(images/grassland.png);}
			#mytank{position: absolute;left:10px;top:100px}
		</style>
	</head>
	<body>		
		<img id="mytank" src="images/right.png"/>
		<script>
			// 编写代码，让坦克能上下左右移动
		</script>
	</body>
</html>
